Garbage-crematory.



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GARBAGE GREMATORY. APPLICATION nun $15.5, 1902.

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PATENTED JUNE 16, 1903.

J.A.PORSYTH.

GARBAGE GREMATORY. APPLIOATIOH FILED AUG. 5. 1902.

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No. 731,032. PATENTED JUNE 16, 1903. J. A. FORSYTH.

GARBAGE CREMATORY. APP-LIOATION IILBD AUG. 6, 1902.

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PATENTED JUNE 16, 1903.

J. A; FORSYTH. GARBAGE CREMATORY. APPLIIOATIOR nun AUG. 5, 1902.

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No. 731,032; I I PATENTBD JUNE 16', 1903.

J. A. FORSYTH.

GARBAGE GREMATORY.

APPLICATION FILED we. 5, 1902.

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Patented June 16, 1903.

JAMES ARCHI FORSYTH; or ATLANTA, GEORGIA.

GARBAGE-CREIVIATORY.

SPECIFICATION formingpart of Letters Patent No. 731,032, dated June 16,1903.

Application filed August 5, 1902. Serial No. 118,529. No model.)

I all whom, it may concern:

' Be it known that I,JAMEs ARCHIE FoRsYTH, a citizen of the UnitedStates, residing at Atlanta, in the county of Fulton and State ofGeorgia, have invented a new and useful Garbage-Crematory, of which thefollowing is a specification.

This invention relates to certain improvements in furnaces of that classemployed for the destruction of garbage and like material.

The principal object of the invention is to provide a furnace of simpleconstruction into which the garbage to be destroyed may be readilyintroduced and incinerated at a comparatively small cost and wherein allthe noxious fumes and gases will be effectually consumed before thedischarge of products of combustion from the escape-flue.

A further object of the invention is to provide an improved form offurnace in which the garbage is subjected to intense heat and wholly orpartially dried and then consumed without the necessity of removing thesame or changing its position in the furnace.

A still further object of the invention is to provide means whereby theescape of the products of combustion or gases from the garbage will beprevented during the intro duction of fresh supplies of garbage to thefurnace.

A still further object of the invention is to provide an improvedgarbage-feeding device arranged especially with a view of separating theliquid material from the mass of garbage prior to its introductioninto-the furnace.

A still further object of the invention is to provide the feed-chutewith a water-jacket at a point where the garbage is fed to the furraceand to maintain a constant circulation of water in the jacket.

A still further object of the invention is to provide a by-pass or fluefor the escape of a portion or all of the products of combustion in theevent of the furnace being choked by garbage without wasting the heat.

With these and other objects in view the invention consists in the novelconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is a longitudinal sectionalelevation of a garbage-incinerating furnace constructed in accordancewith my invention. Fig. 2 is a view,

partly in plan andpartly in sectional plan, of the furnace. Fig. 3 is afront elevation, partly in section, on the line 3 3 of Fig. 1. Fig. A isa detail sectional view on the line A A of Fig. 3. Fig. 5 is atransverse sectional elevation of the furnace on the line 5 5 of i awall 12, said wall serving as a partial support for a pair of tubularboilers 13, which may be of any ordinary construction. In the frontchamber are three fire-boxes 14, each having an arched top and providedwith separate grates 16. In the front wall of the chamber 10 are threefire-doors 17 and ashpit doors 18, the latter communicating withash-pits arranged below the grates and provided with inclined bottoms 19in order to permit the material falling through the grates to feed bygravity. At a point slightly above the inclined part of the ash-pit is ascreen 20 of sufficient mesh to permit the passage of cinders and thelike, while retaining larger articles, such as cans, which may be fed tothe furnace with the garbage and allowed.

to pass through the grates when the latter are dumped or rocked forcleaning purposes. The screen may be removed from position from time totime in order to allow the accumulated material to be discharged fromthe ash-pit door. The arched tops 15 of the combustion-furnaces serve toreceive the garbage from an upper feeding device, and in practice thegarbage is spread evenly over the arched tops by means of suitabletools, which can be inserted through openings 21 in the front of thefurnace. In'each of the tops is an opening 22, through which the driedor partlyconsumed garbage may be fed directly to the combustion-chamberat intervals, although during the drying and burnin g of the garbage thelatter is preferably so'arranged across the openings as to completelyclose the same and prevent the escape of the products of combustionexcept through the open rear end of the chamber. escape-flue for theproducts of combustion when a fire is started, and it may also beutilized as an escape-flue should the furnace become choked by thefalling of the garbage to the inclined rear wall 23 of thecombustionchamber in sufficient quantity to choke the outlet end of thecombustion-chamber.

During the operation of the furnace coal or similar combustible materialmay be fed to the combustion-chambers in the event of there beinginsufficient fuel from the dried and heated garbage, and the products ofcom- .boiler-fiues to the rear chamber 11, and at this point is a grate26, extending completely across the chamber 11 from side to side of thefurnace, said grate being fed'with coke or pounds.

other suitable fuel through one or more doors 27, and the flames fromthis fuel mingle with the products of combustion escaping from theboiler-flues, consuming the noxious fumes and gases and destroyingcarbon and carbon com- The products of combustion after mingling passover a bridge-wall-28, and

thence down to an outlet-flue 29, leading to a chimney 30, which ispreferably of the construction shown in Fig. 7.

The chimney 30 is adapted to receive the products of combustion from aplurality of furnaces, and in the present case two fiues 31 are shownleading to the lower portion of the chimney, a division-plate 32 beingemployed at the center of the chimney in order to prevent cross-drafts.To provide for the free escape of the products of combustion, the lowerportion of the chimney is first contracted to form a comparativelynarrow throat 33, and thence gradually flared out to the full diameterof the interior of the chimney to permit the expansion of the gases andtheir free escape to the outer air.

In some cases the preliminary fires in the combustion-chambers 14 maybecome choked from garbage falling on the inclined wall 23 and closingthe ends of said chambers, and in such cases provision is made for theescape of the products of combustion by forming one or more escape-fines35 in the front wall of the furnace at points between thecombustionchambers and the upper portion of the chamber 10, thearrangement being such that the escaping products of combustion mustfirst pass through the boiler-fines in order that the heat may beutilized before the gases pass to the chimney. These auxiliary fiues areprovided with cleaning-openings extending to the top and front walls ofthe furnace and provided with covers 337 and 38, respectively.

The 0 enin s 22 further afford an- The feeding device is of theconstruction best shown in Fig. 6 and is so arranged as to provide forthe straining of the fluid portions of the garbage, the liquid beingcaught in a separate receptacle and retained, while the saturated massof garbage is mingled with the dry garbage and fed to the furnace.

The dry garbage or other refuse is dumped into a receptacle 40, whichcommunicates by a pipe 41 With a discharge-opening 4:2, arranged at thetop of 'the furnace at a point above the combustion-chambers. With thisopening also communicates a pipe '43, leading from a cylindrical tank 44and provided with a valve 45 at a point above the discharge end of thetube 41. The cylindrical tank 43 is provided with a vertical partition46 and a horizontal partition 47, forming an auxiliary liquid-tank, fromwhich the liquid may be drain ed at intervals through a tap 48. Pivotedto the upper end of the vertical partition 46 is a semicylindricalstrainer 50, provided with a projecting flange or ing 51, which may reston an arm 52, projecting inwardly'from one wall of the liquid-tank andserving to support the screen in the position shown in Fig. (5 while thegarbage or other material to be strained is being poured therein, theliquid falling to the lower portion of the liquid-containin g tank,whilethe screen retains the solid matter. When the screen becomes filled withthe solid material, it is turned on its hinged or 'pivotal connection tothe position shown in dotted lines in Fig. 6, and the solid materialfalls into the tank 44, from whence it may be fed to the furnace.

To prevent burning out the lower portions of the feeding device, theopening with which the feed-tube 43 communicates is provided with awater-jacket 54, formed of two concentric cylindrical casings 54. and55, connected at their lower ends hyatrough-shaped ring 56, and at theirupper ends by aflat ring 57, to which the lower portion of the feedingdevices is bolted; In front of the boilers, at a point just below adepending bridge or bafile 58, are a number of transversely-disposedwater-tubes 59 in co1nmunication with a water-supply pipe 60, andleading from the discharge end of the tubes is a pipe 6l,communicatingwith the water-jacket, the water being heated in the tubes and forcedinto the water-jacket, from whence it escapes through a pipe (52 to anysuitable point. This permits of a constant circulation of water throughthe jacket, and as the water is heated it will to some extent serve todry the garbage in advance of its delivery to the furnace. Betweenintervals of feeding the feed-opening.is closed by a stopper 64 in theform of a dished plate, which may be readily removed from thefeed-opening through an opening formed in the feed-tube and closed by avertical movable slide (35.

In operation the dry garbage or refuse from the. receptacle 40 and themoist material from the tank 44 are fed down through the opening andfall on top of the arched combustion-chambers 15 care being taken tospread the garbage in such manner as to close the opening 22. Theproducts of combustion from the three combustion-chambers strike againstthe inclined rear wall 23, and thence against the lower portion of theshells of the boilers, and are deflected into contact with the garbage,the latter being gradually consumed as it is dried by the directradiation of heat from the combustion-chamber and by contact with theproducts of combustion. The steam and vapor from the garbage are mingledwith the products flue, the consumption being completed when the gasesmingle with the products of combustion arising from the fuel on thegratebars 26. The dried residue which may remain on top of thecombustion-chambers is then forced down through the openings 22 directlyonto the mass of fuel in the combustion-chambers and serves to assist inthe destruction of a fresh supply of garbage which may be fed to thefurnace.

During feeding operation a damper 7 O in the main wall 12 is opened inorder to place the chamber 10 in direct communication with theescape-flue 29, leading to the chimney, the gases passing directly tothe chimney and their escape through the feed-opening andgarbage-receptacle being prevented.

With some classes of garbage which may contain a sufficient quantity ofcombustible material or with which refuse combustible material, such aspaper and the like, may be mixed it will not be necessary to supplyanxiliary fuel to the combustion-chambers except at the starting of theoperation; but it is found advisable to employ fuel on the grate-bars 26in order to effectually destroy the noxious fumes and gases arising fromthe garbage.

IVhile the construction herein described and illustrated in theaccompanying drawings is the preferred form of the device, it is obviousthat various changes proportions, size, and minor details of thestructure may be made without departing from the spirit or sacrificingany of the advantages of the invention.

Having thus described my invention, what I claim is 1. In a device ofthe class specified, a furnace, a combustion-chamber disposed thereinand having an arched top for the reception of the garbage to bedestroyed, the rear end of the combustion-chamber being open to permitthe free escape of the products of combustion, and means for deflectingthe products of combustion into contact with the mass of garbage restingon top of the combustionchambers.

2. In a device of the class specified, a furnace, a combustion-chamberdisposed within the furnace and having a top portion for the receptionand support of the garbage to be destroyed, the rear end of the chamberbeing of combustion and partly consumed during the passage through theboilerin the form, V

open to permit the free escape'of the products of combustion, and asteam-boiler extending partly over the top of the combustion-chamber andserving to deflect the prodnets of combustion into contact with thegarbage.

3. In a device of the'class specified, a furnace, a combustion-chamberdisposed within the furnace and comprising an arched top and a lowergrate, an inclined lower wall disposed to the rear of thecombustion-chamber, and a steam-boiler having one end extending over theinclined w ll and a portion of the top of the combustionchamber andserving to deflect the products of combustion into contact with thegarbage to be destroyed, substantially as specified.

i. In a device of the class specified, the combination of the furnace, acombustionchamber disposed within the furnace and having an arched topfor the reception of the garbage to be destroyed, a fuel-grate formingthe lower portion of the combustion-chamber, an ash-pit disposed belowthe grate-bars and having an inclined bottom for feeding the ashes andsimilar material in the direction of the ash-pit door, and a removebleinclined screen arranged above the bottom portion and serving totemporarily retain the larger particles of material, substantially asspecified.

5. In a device of the class specified, a furnace having an escape-flue,a combustionchamber having a top for the reception of the garbage to bedestroyed, a steam-boiler disposed between the combustion-chamber andthe escape-flue and acting as a deflector to direct the products ofcombustion into contact with the garbage, and an auxiliary flue havingan adjustable damper or valve which may be opened to permit the directpassage of the products of combustion to the escapefiue.

6. In a device of the class specified, a furnace, a combustion-chambertherein and provided with a top for the reception of the garbage to bedestroyed, an escape-flue, a steamboiler provided with flues for thepassage of the products of combustion and arranged between thecombustion chamber and the escape-fine, the lower shell of the boileracting as a deflector to direct the products of com bustion into contactwith the garbage, and an auxiliary flue forming a by-pass between thecombustionchamber and the entrance end of the boiler-flue in the eventof the choking of the main escape from the combustionchamber by anaccumulation of garbage.

7. In a device ofthe class specified, a furnace divided into two mainsections each provided with combustion-chambers, means in the first ofsaid chambers for the reception and support of the garbage to beconsumed, a steam-boiler having portions disposed within both chambersand provided with fiues whereby the products of combustion from thefirst chamber may pass to the second chamber and there mingle with theproducts of combustion in the second chamber, said boiler havingportions of its shell exposed to the direct action of the products ofcombustion in both chambers and in the first of said chambers acting asa deflector to direct the products of combustion into contact with thegarbage, and an escape-flue in communication with said second chamber.

8. In a device of the class specified, a furnace divided into two mainchambers, a steamboiler arranged partly Within both chambers and havingfines for the passage of the products of combustion from the firstchamber to the second chamber, a combustion-chamber arranged Within thefirst of the main chambers and having an arched top for the reception ofthe garbage to be consumed, an auxiliary fire-supporting grate in thesecond chamber, said grate being extended partly under one end of theboiler and the products of combustion therefrom being mingled With theproducts of combustion from the first chamber after passing through theboilerfiues, and an escape-flue'leading from said second chamber,substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of tWo Witnesses.

JAMES ARCHIE FORSYTH. \Vitnesses j W. F. MANRY,

E. H. THORNTON.

